check .... iOS 13 ? When ?
Preview release doesn’t install on my iPhone 6.
Beta versions are in testing now, but gold version likely in September. For now, ignore ConservativeMind and use a complex alphanumeric/symbol passcode. Even a five character complex alphanumeric/symbol at one try per second would require ~17,000 years to try all potential passcodes. I think that may be long enough to discourage them. A four character, alphanumeric/symbol from the 223 character set, if you use obscure symbols and characters, would likely take up to 78 years to try every possible combination. Obscure characters just take more key presses or holds to get to.